[Android] New equalizer: export all now export the complete state

[Nicolas Pomepuy]

vlc-android | branch: master | Nicolas Pomepuy <nicolas at videolabs.io> | Thu Jul  3 13:07:36 2025 +0200| [b4e9f5216a8d67cc8b9c2c9534537f4e8b5aa943] | committer: Nicolas Pomepuy

New equalizer: export all now export the complete state

Including the custom preset, the default presets' states and the current equalizer

> https://code.videolan.org/videolan/vlc-android/commit/b4e9f5216a8d67cc8b9c2c9534537f4e8b5aa943
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 .../java/org/videolan/vlc/database/EqualizerDao.kt |  6 ++
 .../videolan/vlc/gui/EqualizerSettingsActivity.kt  |  6 +-
 .../vlc/gui/preferences/search/PreferenceParser.kt |  1 +
 .../videolan/vlc/repository/EqualizerRepository.kt |  4 ++
 .../src/org/videolan/vlc/util/EqualizerUtil.kt     | 84 +++++++++++++++-------
 .../src/org/videolan/vlc/util/JsonUtil.kt          | 28 ++++++--
 6 files changed, 98 insertions(+), 31 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/b4e9f5216a8d67cc8b9c2c9534537f4e8b5aa943